Chaos Computer Club - recent events feed (low quality)

It started with a simple idea in 2016: make the state of security of our government transparent/public. The simple idea has become national government policy. Using transparency we've helped fix tons of security issues, reduce costs and increased control on IT. This year we've rolled out in Belgium and started measuring accessibility of websites in the same fashion. Learn how we've achieved extrem...

Game randomizers can breathe fresh air into your favorite video games by changing where things are, what enemies you fight, or even what the win conditions are. But how do they work? Let's embrace chaos and learn about them! Game randomizers can breathe fresh air into your favorite video games by changing where things are, what enemies you fight, or even what the win conditions are. But how do the...

I developed a 100% open-source (Quad core A7, 512MB RAM) Linux-enabled Flipper module for WiFi pentesting and ethical hacking! This talk covers how and why I developed the Flipper Blackhat: starting at the hardware level through the bootloader, kernel and up to user space. On the hardware side, I'll detail the power supplies, the DDR3 routing, radios, and the A33 processor itself. I'll show the bu...

Building entrance systems for prisons, hospitals an tv studio's should be secure. But is this really the case? After "Knock knock who's there 1.0" at MCH2022, we will again look at some high-tech lockpicking, this time at more sensitive locations. The responsible disclosure is a tale of it's own! And why exactly is a 3-letter agency in the US interested in the disclosure? Feeling safe at home and...

Belgian creative technologist and artist Dries Depoorter, based in Ghent, creates thought-provoking work about technology, surveillance, AI and social media in a playful way that makes people laugh while delivering serious messages in an accessible way. His projects explore digital culture that can inspire marketers: privacy challenges, artificial intelligence applications, surveillance and authen...

ORM's and/or developers don't understand databases, transactions, or concurrency. After the [Air France-KLM dataleak](https://media.ccc.de/v/37c3-lightningtalks-58027-air-france-klm-6-char-short-code) I kept repeating this was not a real hack, and confessed I always wanted to hack a system based on triggering race conditions because the lack of proper transactions. This was way easier than expecte...

The European electricity network has become a ‘smart grid.’ This offers many opportunities for sustainability but also makes our energy system more vulnerable to digital attacks. DIVD has been conducting research into vulnerabilities in charging stations, solar panel inverters, home batteries, and Energy Management Systems. In this talk, we will demonstrate how we could have generated power outage...

To understand the inner workings of Kubernetes and to prepare for the K8s certification exams, I decided to create a K8s cluster from scratch, the hard way, on premises (“de meterkast”) on virtual machines all using Alpine Linux. This talk is how I tried to do it, how I succeeded, failed and added a CEPH cluster and ETCD cluster along the way. It includes a lot of technical details, but if there i...

So you have a new microcontroller, how do you get started programming it? This is going to be the talk I wished already existed when I first got into microcontroller programming. Getting started with a new microcontroller can be daunting. They do come with datasheets, but these are often hundreds if not thousands of pages long and assume you already know the basics. So that's what I will be explai...

Challenge the Cyber is a foundation that actively fosters security skills in young hackers (

Fruit machines are everywhere.....and they contain cash. This is a talk about the efforts people go to to steal cash from the machines, and what can go wrong when the engineers creating them make mistakes. I've been working with fruit machines as a software engineer for over 30 years, primarily on system platforms and machine security. This talk gives an insight into some of the physical technique...

In this WHY2025 session, Mischa van Geelen from Anovum will walk through his recent dive into Synology’s Disk Station Manager. After months inside the software, he surfaced with a mix of intriguing discoveries and a few findings that raise eyebrows. Without getting lost in technical weeds, the talk sketches DSM’s inner logic, hints at overlooked traces, and shows how a sharper view of the platform...

De Tweede Kamerverkiezingen komen eraan en de digitale vraagstukken liggen op tafel. Wat moet het volgende kabinet doen op het gebied van cyberveiligheid, AI, privacy en digitale autonomie? Welke keuzes zijn écht nodig, en wie durft ze te maken? Tijdens WHY2025 organiseren we Het Grote Cyber Debat waar politici het gesprek aangaan met de mensen die dagelijks aan de knoppen zitten: ethische hackers...

Birdsong is all around us, but is there a deeper meaning? Can computer analysis help us decipher these hidden patterns in our own backyards? This talk charts my journey exploring the world of open source projects for bird (and bat!) audio identification, some of the systems I've operated, and the data art pieces I've created from the results. From the science of birdsong, to machine learning model...

We developed an open-source low-field MRI and got the clinical certification started! The aim is to create a reference technology for healthcare – which comes with its own complex questions. The Open Source Imaging Initiative has developed an open-source low-field MRI – and is now working on the clinical certification for it (+will open-source it as far as legally possible)! This started raising s...

AI is everywhere and where it isn't today, it most likely will be tomorrow. But jumping on the hype train and adding AI often does not sufficiently consider security. This talk walks you through cases of AI failures, how they've come about, and how they could have been avoided. We're also going over some projections of spectacular AI failures we're likely to see going forward. AI is everywhere and...

PLOT4AI 2.0 is a pioneering open source AI threat modeling tool that provides a structured, lifecycle-based approach to AI risk identification. With over 100 AI-specific risk sources across eight categories, it aligns with the EU AI Act and supports trustworthy AI development and deployment. In this talk, the author will present the story of this internationally recognized tool, first published in...

I briefly explain quantum cryptography. It is unbreakable in principle, but its real implementations have vulnerabilities arising from equipment imperfections. Certification standards [1] and accredited labs are being established that can test commercial products for these flaws. I explain how we have analysed a commercial quantum key distribution system for loopholes, patched them, and designed t...

This is an English spoken talk about the Dutch language, from a Dutch linguist's point of view. Some grammar and quirks of the language are illustrated using theory and examples, as well as a small "bluff your way into Dutch" The inspiration for this talk comes from my background as a general linguist and current work as a teacher of Dutch as a foreign language. Eveybody with an interest in the Du...

As tinker and software geek robotics is a brilliant field. Finally a field that combines the beautiful creations coming out of your FDM printer and the results of multiple cups of coffee turned into (almost) working software. However where do you get started and how does it actually work? This talk is about all these questions and the corresponding answers that I found during my journey to build m...

Modern UI/UX design is rooted in centuries-old geometry. This talk explores how historic tools—from Greek constructions to Bézier curves— is still broadly used to solve real problems today. Through demos and visual examples, we’ll uncover practical, eye-opening methods that blend math, art, and design. No technical background needed—just curiosity. Prepare to rethink how we build and understand th...

From (political) climate change to people marrying AI chatbots. The world can be a scary place. This talk will be a comprehensive guide to anxiety. We’ll go through the basics of neuroscience and **causes of anxiety**, look at **the effects of the neurodivergent brain on anxiety** and you will be provided with **tools backed by science to implement directly into your daily life!** You might feel t...

This talk is based on my experience working for Comcast/Sky Group in WLAN (802.11) standardisation. It follows the trajectory from environmental laws through to technical regulations and finally in to technical standards, patents and technologies. The talk argues that well-enforced norms and regulations remain a good way of incentivising socially and globally desirable outcomes, while explaining h...

Economic models are increasingly challenged for destroying our planet. But it is not easy to design a sustainable alternative. In a follow-up on my OHM talk "hacking for bankers", I would like to present a few realistic currencies that we can use to move away from the unsustainable path that we are currently walking. We could build a profitable yet sustainable grassroots movement. At OHM2013 I gav...

FreeSewing is the leading open-source library for parametric sewing patterns and combines sewing patterns with code; instead of drafting patterns on paper (hardly an easy task!), you can now enter the measurements of your body into the platform to get a sewing pattern that fits YOU. In this talk, I will introduce you to FreeSewing, the sewing world as a whole and FreeSewing's role in it, and I wil...